- 09 Jan, 2017 33 commits
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jpinto authored
This patch moves stmmac_clk, pclk, clk_ptp_ref and stmmac_rst to the plat_stmmacenet_data structure. It also moves these platform variables initialization to stmmac_platform. This was done for two reasons: a) If PCI is used, platform related code is being executed in stmmac_main resulting in warnings that have no sense and conceptually was not right b) stmmac as a synopsys reference ethernet driver stack will be hosting more and more drivers to its structure like synopsys/dwc_eth_qos.c. These drivers have their own DT bindings that are not compatible with stmmac's. One of the most important are the clock names, and so they need to be parsed in the glue logic and initialized there, and that is the main reason why the clocks were passed to the platform structure. Signed-off-by:
Joao Pinto <jpinto@synopsys.com> Tested-by:
Niklas Cassel <niklas.cassel@axis.com> Reviewed-by:
Lars Persson <larper@axis.com> Acked-by:
Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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jpinto authored
This patch adds a new parameter to the stmmac DT: snps,en-tx-lpi-clockgating. It was ported from synopsys/dwc_eth_qos.c and it is useful if lpi tx clock gating is needed by stmmac users also. Signed-off-by:
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Tobias Regnery authored
The code to handle rx checksumming was in the driver since its introduction but for reasons unknown the feature flag was left out. Now it is possible to enable this feature with ethtool. Tested on my AR8161 ethernet card, there are no regressions observed in netperf if this feature is enabled. Signed-off-by:
Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by:
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David S. Miller authored
Davide Caratti says: ==================== net/sched: act_csum: add support for SCTP checksum This series extends current act_csum functionality to allow computation of SCTP checksums. Patch 1 ensures LIBCRC32C will be selected if NET_ACT_CSUM is selected. Patch 2 extends act_csum to handle IPPROTO_SCTP protocol in IPv4/IPv6 header, and eventually compute the CRC32c value. v2: - style fix in tc_csum.h - avoid nested if statement in act_csum.c ==================== Signed-off-by: -
Davide Caratti authored
modify act_csum to compute crc32c on IPv4/IPv6 packets having SCTP in their payload, and extend UAPI definitions accordingly. Signed-off-by:
Davide Caratti <dcaratti@redhat.com> Signed-off-by:
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Davide Caratti authored
LIBCRC32C is needed to compute crc32c on SCTP packets. Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: small driver update This patchset contains various small "non-net" fixes and enhancements. ==================== Signed-off-by: -
Yotam Gigi authored
As ENOTSUPP is specific to NFS, change the return error value to EOPNOTSUPP in various places in the mlxsw driver. Signed-off-by:
Yotam Gigi <yotamg@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Yotam Gigi authored
Fix the order of the free directives to match the port init function Signed-off-by:
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Yotam Gigi authored
Currently, the mlxsw spectrum driver only supports offloading the matchall classifier together with the mirred action. To allow more matchall tc offloads, make the code symmetric so that it can be easily extended later on for other actions. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Elad Raz authored
Probably some copy-paste error from "int_msix" that caused "int_" prefix to appear in the comments for all "eq_" APIs. Signed-off-by:
Elad Raz <eladr@mellanox.com> Acked-by:
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Elad Raz authored
The "err" variable is been checked, return always 0. Signed-off-by:
Vadim Pasternak <vadimp@mellanox.com> Signed-off-by:
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Ivan Khoronzhuk authored
Allow to set number of descs close to possible values. In case of minimum limit it's equal to number of channels to be able to set at least one desc per channel. For maximum limit leave enough descs number for tx channels. Signed-off-by:
Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Signed-off-by:
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Alexandru Moise authored
This struct member is already initialized to zero upon root_ht's allocation via kzalloc(). Signed-off-by:
Alexandru Moise <00moses.alexander00@gmail.com> Signed-off-by:
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David S. Miller authored
Jason A. Donenfeld says: ==================== Introduce The SipHash PRF This patch series introduces SipHash into the kernel. SipHash is a cryptographically secure PRF, which serves a variety of functions, and is introduced in patch #1. The following patch #2 introduces HalfSipHash, an optimization suitable for hash tables only. Finally, the last two patches in this series show two usages of the introduced siphash function family. It is expected that after this initial introduction, other usages will follow. Please read the extensive descriptions in patch #1 and patch #2 of what these functions do and the various levels of assurances. They're products of intense cryptographic research, and I believe they're suitable for the uses outlined herein. The use of SipHash is not limited to the networking subsystem -- indeed I would like to use it in other places too in the kernel. But after discussing with a few on this list and at Linus' suggestion, the initial import of these functions is coming through the networking tree. After these are merged, it will then be easier to expand use elsewhere. Changes v2->v3: - hsiphash keys now simply use an unsigned long, in order to avoid a cluttered ifdef and make it a bit more clear what's happening. - A typo in the documentation has been fixed. - The documentation has been augmented with an example relating to struct packing and passing. - The net_secret variable is now __read_mostly. Hopefully this is the last of the required revisions, and v3 can be merged into net-next. ==================== Signed-off-by: -
Jason A. Donenfeld authored
SHA1 is slower and less secure than SipHash, and so replacing syncookie generation with SipHash makes natural sense. Some BSDs have been doing this for several years in fact. The speedup should be similar -- and even more impressive -- to the speedup from the sequence number fix in this series. Signed-off-by:
Jason A. Donenfeld <Jason@zx2c4.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David Miller <davem@davemloft.net> Signed-off-by:
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Jason A. Donenfeld authored
This gives a clear speed and security improvement. Siphash is both faster and is more solid crypto than the aging MD5. Rather than manually filling MD5 buffers, for IPv6, we simply create a layout by a simple anonymous struct, for which gcc generates rather efficient code. For IPv4, we pass the values directly to the short input convenience functions. 64-bit x86_64: [ 1.683628] secure_tcpv6_sequence_number_md5# cycles: 99563527 [ 1.717350] secure_tcp_sequence_number_md5# cycles: 92890502 [ 1.741968] secure_tcpv6_sequence_number_siphash# cycles: 67825362 [ 1.762048] secure_tcp_sequence_number_siphash# cycles: 67485526 32-bit x86: [ 1.600012] secure_tcpv6_sequence_number_md5# cycles: 103227892 [ 1.634219] secure_tcp_sequence_number_md5# cycles: 94732544 [ 1.669102] secure_tcpv6_sequence_number_siphash# cycles: 96299384 [ 1.700165] secure_tcp_sequence_number_siphash# cycles: 86015473 Signed-off-by:
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Jason A. Donenfeld authored
HalfSipHash, or hsiphash, is a shortened version of SipHash, which generates 32-bit outputs using a weaker 64-bit key. It has *much* lower security margins, and shouldn't be used for anything too sensitive, but it could be used as a hashtable key function replacement, if the output is never exposed, and if the security requirement is not too high. The goal is to make this something that performance-critical jhash users would be willing to use. On 64-bit machines, HalfSipHash1-3 is slower than SipHash1-3, so we alias SipHash1-3 to HalfSipHash1-3 on those systems. 64-bit x86_64: [ 0.509409] test_siphash: SipHash2-4 cycles: 4049181 [ 0.510650] test_siphash: SipHash1-3 cycles: 2512884 [ 0.512205] test_siphash: HalfSipHash1-3 cycles: 3429920 [ 0.512904] test_siphash: JenkinsHash cycles: 978267 So, we map hsiphash() -> SipHash1-3 32-bit x86: [ 0.509868] test_siphash: SipHash2-4 cycles: 14812892 [ 0.513601] test_siphash: SipHash1-3 cycles: 9510710 [ 0.515263] test_siphash: HalfSipHash1-3 cycles: 3856157 [ 0.515952] test_siphash: JenkinsHash cycles: 1148567 So, we map hsiphash() -> HalfSipHash1-3 hsiphash() is roughly 3 times slower than jhash(), but comes with a considerable security improvement. Signed-off-by:
Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com> Signed-off-by:
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Jason A. Donenfeld authored
SipHash is a 64-bit keyed hash function that is actually a cryptographically secure PRF, like HMAC. Except SipHash is super fast, and is meant to be used as a hashtable keyed lookup function, or as a general PRF for short input use cases, such as sequence numbers or RNG chaining. For the first usage: There are a variety of attacks known as "hashtable poisoning" in which an attacker forms some data such that the hash of that data will be the same, and then preceeds to fill up all entries of a hashbucket. This is a realistic and well-known denial-of-service vector. Currently hashtables use jhash, which is fast but not secure, and some kind of rotating key scheme (or none at all, which isn't good). SipHash is meant as a replacement for jhash in these cases. There are a modicum of places in the kernel that are vulnerable to hashtable poisoning attacks, either via userspace vectors or network vectors, and there's not a reliable mechanism inside the kernel at the moment to fix it. The first step toward fixing these issues is actually getting a secure primitive into the kernel for developers to use. Then we can, bit by bit, port things over to it as deemed appropriate. While SipHash is extremely fast for a cryptographically secure function, it is likely a bit slower than the insecure jhash, and so replacements will be evaluated on a case-by-case basis based on whether or not the difference in speed is negligible and whether or not the current jhash usage poses a real security risk. For the second usage: A few places in the kernel are using MD5 or SHA1 for creating secure sequence numbers, syn cookies, port numbers, or fast random numbers. SipHash is a faster and more fitting, and more secure replacement for MD5 in those situations. Replacing MD5 and SHA1 with SipHash for these uses is obvious and straight-forward, and so is submitted along with this patch series. There shouldn't be much of a debate over its efficacy. Dozens of languages are already using this internally for their hash tables and PRFs. Some of the BSDs already use this in their kernels. SipHash is a widely known high-speed solution to a widely known set of problems, and it's time we catch-up. Signed-off-by:
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David Ahern authored
Nothing about the route lookup requires bottom half to be disabled. Remove the local_bh_disable ... local_bh_enable around ip_route_input. This appears to be a vestige of days gone by as it has been there since the beginning of git time. Signed-off-by:
David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
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Philippe Reynes authored
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by:Philippe Reynes <tremyfr@gmail.com> Signed-off-by:
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Philippe Reynes authored
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by: -
Philippe Reynes authored
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by: -
Philippe Reynes authored
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by: -
Philippe Reynes authored
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by: -
yuan linyu authored
sock_init() call it but not check it's return value, so change it to void return and add an internal BUG_ON() check. Signed-off-by:
yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn> Signed-off-by:
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David S. Miller authored
Willem de Bruijn says: ==================== convert tc_verd to integer bitfields The skb tc_verd field takes up two bytes but uses far fewer bits. Convert the remaining use cases to bitfields that fit in existing holes (depending on config options) and potentially save the two bytes in struct sk_buff. This patchset is based on an earlier set by Florian Westphal and its discussion (http://www.spinics.net/lists/netdev/msg329181.html). Patches 1 and 2 are low hanging fruit: removing the last traces of data that are no longer stored in tc_verd. Patches 3 and 4 convert tc_verd to individual bitfields (5 bits). Patch 5 reduces TC_AT to a single bitfield, as AT_STACK is not valid here (unlike in the case of TC_FROM). Patch 6 changes TC_FROM to two bitfields with clearly defined purpose. It may be possible to reduce storage further after this initial round. If tc_skip_classify is set only by IFB, testing skb_iif may suffice. The L2 header pushing/popping logic can perhaps be shared with AF_PACKET, which currently not pkt_type for the same purpose. Changes: RFC -> v1 - (patch 3): remove no longer needed label in tfc_action_exec - (patch 5): set tc_at_ingress at the same points as existing SET_TC_AT calls Tested ingress mirred + netem + ifb: ip link set dev ifb0 up tc qdisc add dev eth0 ingress tc filter add dev eth0 parent ffff: \ u32 match ip dport 8000 0xffff \ action mirred egress redirect dev ifb0 tc qdisc add dev ifb0 root netem delay 1000ms nc -u -l 8000 & ssh $otherhost nc -u $host 8000 Tested egress mirred: ip link add veth1 type veth peer name veth2 ip link set dev veth1 up ip link set dev veth2 up tcpdump -n -i veth2 udp and dst port 8000 & tc qdisc add dev eth0 root handle 1: prio tc filter add dev eth0 parent 1:0 \ u32 match ip dport 8000 0xffff \ action mirred egress redirect dev veth1 tc qdisc add dev veth1 root netem delay 1000ms nc -u $otherhost 8000 Tested ingress mirred: ip link add veth1 type veth peer name veth2 ip link add veth3 type veth peer name veth4 ip netns add ns0 ip netns add ns1 for i in 1 2 3 4; do \ NS=ns$((${i}%2)); \ ip link set dev veth${i} netns ${NS}; \ ip netns exec ${NS} \ ip addr add dev veth${i} 192.168.1.${i}/24; \ ip netns exec ${NS} \ ip link set dev veth${i} up; \ done ip netns exec ns0 tc qdisc add dev veth2 ingress ip netns exec ns0 \ tc filter add dev veth2 parent ffff: \ u32 match ip dport 8000 0xffff \ action mirred ingress redirect dev veth4 ip netns exec ns0 \ tcpdump -n -i veth4 udp and dst port 8000 & ip netns exec ns1 \ nc -u 192.168.1.2 8000 ==================== Signed-off-by:
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Willem de Bruijn authored
The tc_from field fulfills two roles. It encodes whether a packet was redirected by an act_mirred device and, if so, whether act_mirred was called on ingress or egress. Split it into separate fields. The information is needed by the special IFB loop, where packets are taken out of the normal path by act_mirred, forwarded to IFB, then reinjected at their original location (ingress or egress) by IFB. The IFB device cannot use skb->tc_at_ingress, because that may have been overwritten as the packet travels from act_mirred to ifb_xmit, when it passes through tc_classify on the IFB egress path. Cache this value in skb->tc_from_ingress. That field is valid only if a packet arriving at ifb_xmit came from act_mirred. Other packets can be crafted to reach ifb_xmit. These must be dropped. Set tc_redirected on redirection and drop all packets that do not have this bit set. Both fields are set only on cloned skbs in tc actions, so original packet sources do not have to clear the bit when reusing packets (notably, pktgen and octeon). Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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Willem de Bruijn authored
Field tc_at is used only within tc actions to distinguish ingress from egress processing. A single bit is sufficient for this purpose. Signed-off-by:
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Willem de Bruijn authored
Extract the remaining two fields from tc_verd and remove the __u16 completely. TC_AT and TC_FROM are converted to equivalent two-bit integer fields tc_at and tc_from. Where possible, use existing helper skb_at_tc_ingress when reading tc_at. Introduce helper skb_reset_tc to clear fields. Not documenting tc_from and tc_at, because they will be replaced with single bit fields in follow-on patches. Signed-off-by:
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Willem de Bruijn authored
Packets sent by the IFB device skip subsequent tc classification. A single bit governs this state. Move it out of tc_verd in anticipation of removing that __u16 completely. The new bitfield tc_skip_classify temporarily uses one bit of a hole, until tc_verd is removed completely in a follow-up patch. Remove the bit hole comment. It could be 2, 3, 4 or 5 bits long. With that many options, little value in documenting it. Introduce a helper function to deduplicate the logic in the two sites that check this bit. The field tc_skip_classify is set only in IFB on skbs cloned in act_mirred, so original packet sources do not have to clear the bit when reusing packets (notably, pktgen and octeon). Signed-off-by:
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Willem de Bruijn authored
This field is no longer kept in tc_verd. Remove it from the global definition of that struct. Signed-off-by:
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Willem de Bruijn authored
Remove the last reference to tc_verd's munge and redirect ttl bits. These fields are no longer used. Signed-off-by:
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- 08 Jan, 2017 7 commits
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Florian Fainelli authored
While it is useful to know which MDIO device is being registered, demote the dev_info() to a dev_dbg(). Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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stephen hemminger authored
In dev_get_stats() the statistic structure storage has already been zeroed. Therefore network drivers do not need to call memset() again. Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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stephen hemminger authored
The network device operation for reading statistics is only called in one place, and it ignores the return value. Having a structure return value is potentially confusing because some future driver could incorrectly assume that the return value was used. Fix all drivers with ndo_get_stats64 to have a void function. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== 100GbE Intel Wired LAN Driver Updates 2017-01-08 This series contains updates to fm10k only. Ngai-Mint changes the driver to use the MAC pointer in the fm10k_mac_info structure for fm10k_get_host_state_generic(). Fixed a race condition where the mailbox interrupt request bits can be cleared before being handled causing certain mailbox messages from the PF to be untreated and the PF will enter in some inactive state. Jake removes the typecast of u8 to char, and the extra variable that was created for the typecast. Bumps the driver version. Added back the receive descriptor timestamp value so that applications built on top of the IES API can function properly. Cleaned up the debug statistics flag, since debug statistics were removed and the flag was missed in the removal. Scott limits the DMA sync for CPU to the actual length of the packet, instead of the entire buffer, since the DMA sync occurs every time a packet is received. ==================== Signed-off-by: -
David Ahern authored
fl4 arg is not used; remove it. Signed-off-by:
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David Ahern authored
ipmr_get_route has 1 caller and the nowait arg is 0. Remove the arg and simplify ipmr_get_route accordingly. Signed-off-by:
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Derek Chickles authored
Because every call to octeon_flush_iq() has a hardcoded 1 for the pending_thresh argument, simplify that function by removing that argument. This avoids one atomic read as well. Signed-off-by:
Derek Chickles <derek.chickles@cavium.com> Signed-off-by:
Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by:
Satanand Burla <satananda.burla@cavium.com> Signed-off-by:
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